{"id":6350,"date":"2016-04-12T12:00:08","date_gmt":"2016-04-12T16:00:08","guid":{"rendered":"http:\/\/www.whatgrowsthere.com\/grow\/?p=6350"},"modified":"2015-09-13T18:03:53","modified_gmt":"2015-09-13T22:03:53","slug":"new-threadleaf-coreopsis-all-the-rage","status":"publish","type":"post","link":"https:\/\/whatgrowsthere.com\/grow\/2016\/04\/12\/new-threadleaf-coreopsis-all-the-rage\/","title":{"rendered":"New Coreopsis Cultivars All The Rage"},"content":{"rendered":"
\"Coreopsis<\/a>

Coreopsis verticillata at Kingwood Center, Mansfield, Ohio<\/p><\/div>\n

\"Coreopsis<\/a>

Coreopsis ‘Jethro Tull’ (photo from ItSaul Plants, Inc.)<\/p><\/div>\n

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Threadleaf coreopsis (Coreopsis verticillata<\/em>), also called tickseed, is a\u00a0popular summer flowering\u00a0 perennial. Coreopsis are native to the U.S. and produces hundreds of\u00a0pale-yellow blooms. Depending on cultivar, plant\u00a0grows 12 to 18 inches tall and 2 feet wide. Some gardeners\u00a0even plant\u00a0old-time favorites like ‘Zagreb’ and ‘Moonbeam’\u00a0as annuals (USDA hardiness zones 4 – 9).<\/p>\n

Big flower tickseed (C. grandiflora<\/em>)\u00a0produces larger flowers on taller plants, up to 3 feet high. Flowers are\u00a0bright yellow and daisy-like.\u00a0Many cultivars re-bloom a second\u00a0and even third\u00a0time if mowed back after a bloom cycle has finished. They tolerate hot, humid summers, but\u00a0garden soil should not be allowed\u00a0to dry out. Height and spread\u00a0vary by cultivar and\u00a0level of care (irrigation\u00a0+ fertilizer).<\/p>\n

Coreopsis are one of the easiest perennials to grow. For best\u00a0show plant 3 or more of one cultivar\u00a0for a sea of\u00a0color in a sunny front\u00a0garden border or in containers. Set out\u00a0plants anytime from late April\u00a0through September. Plant 12 to 18 inches apart in a sunny spot and in well-drained soil. Plant the crown just at or above the soil surface.<\/p>\n

Removing spent flowers encourage re-blooming, prevents reseeding, and gives the flower bed\u00a0a neater look. Yellow to gold flowers attract numerous nectar seeking bees and butterflies. Leaving the seedpods on\u00a0plants will\u00a0attract large numbers of goldfinches.<\/p>\n

Divide\u00a0clumps every 3 years for optimum plant performance. Aphids may be occasionally\u00a0pests.\u00a0Powdery and downy mildew\u00a0on foliage in garden areas with poor air circulation; some cultivars are rated better for mildew resistance.<\/p>\n

Recent Coreopsis Introductions<\/span>:
\n‘Cosmic Eye’-\u00a0 daisy blooms\u00a0with wine-red petals, tipped in soft yellow and surrounding an orangey yellow button eye; grows 18 inch\u00a0high by 24 inch wide. Introduced by Darrell Probst and is reliably hardy in zones 4 – 9\u00a0with\u00a0winter snow cover.<\/p>\n

‘Jethro Tull’ – compact grower, 18 inches high\u00a0by 24 inches wide with dark-green leaves and\u00a0blanketed with single golden-yellow daisies with a ring of tubular petals; hybrid introduced by ItSaul Plants in Georgia.<\/p>\n

‘Mercury Rising’ – another Darryl Probst introduction\u00a0large velvety-wine daisy flowers with\u00a0contrasting gold-orange button center, appearing in succession from mid summer to mid autumn. Some flowers may appear frosted in creamy-white. Cut plants by half in mid-July if\u00a0plants begin to flop. (hardy in zones 4 – 9\u00a0with\u00a0winter snow cover).<\/p>\n

‘Route 66’ –\u00a0threadleaf coreopsis discovered in 2005 in\u00a0a Pennsylvania garden; plants grow 24-28 inches tall with\u00a0bright yellow petals with\u00a0large red eye; long blooming\u00a0period from late June until mid October.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Threadleaf coreopsis (Coreopsis verticillata), also called tickseed, is a\u00a0popular summer flowering\u00a0 perennial. Coreopsis are native to the U.S. and produces hundreds of\u00a0pale-yellow blooms. Depending on cultivar, plant\u00a0grows 12 to 18 inches tall and 2 feet wide. Some gardeners\u00a0even plant\u00a0old-time favorites like ‘Zagreb’ and ‘Moonbeam’\u00a0as annuals (USDA hardiness zones […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[444,657,747,749,780,645,806,665,627,625,601,630,706,113],"tags":[],"_links":{"self":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/6350"}],"collection":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/comments?post=6350"}],"version-history":[{"count":10,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/6350\/revisions"}],"predecessor-version":[{"id":8064,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/6350\/revisions\/8064"}],"wp:attachment":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/media?parent=6350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/categories?post=6350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/tags?post=6350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}